mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-21 21:43:22 +02:00
* new split algorithm (as proposed in http://archives.postgresql.org/pgsql-hackers/2006-06/msg00254.php) * possible call pickSplit() for second and below columns * add spl_(l|r)datum_exists to GIST_SPLITVEC - pickSplit should check its values to use already defined spl_(l|r)datum for splitting. pickSplit should set spl_(l|r)datum_exists to 'false' (if they was 'true') to signal to caller about using spl_(l|r)datum. * support for old pickSplit(): not very optimal but correct split * remove 'bytes' field from GISTENTRY: in any case size of value is defined by it's type. * split GIST_SPLITVEC to two structures: one for using in picksplit and second - for internal use. * some code refactoring * support of subsplit to rtree opclasses TODO: add support of subsplit to contrib modules
279 lines
5.9 KiB
C
279 lines
5.9 KiB
C
#include "btree_gist.h"
|
|
#include "btree_utils_num.h"
|
|
|
|
#include "utils/datetime.h"
|
|
|
|
|
|
typedef struct
|
|
{
|
|
Timestamp lower;
|
|
Timestamp upper;
|
|
} tsKEY;
|
|
|
|
/*
|
|
** timestamp ops
|
|
*/
|
|
PG_FUNCTION_INFO_V1(gbt_ts_compress);
|
|
PG_FUNCTION_INFO_V1(gbt_tstz_compress);
|
|
PG_FUNCTION_INFO_V1(gbt_ts_union);
|
|
PG_FUNCTION_INFO_V1(gbt_ts_picksplit);
|
|
PG_FUNCTION_INFO_V1(gbt_ts_consistent);
|
|
PG_FUNCTION_INFO_V1(gbt_tstz_consistent);
|
|
PG_FUNCTION_INFO_V1(gbt_ts_penalty);
|
|
PG_FUNCTION_INFO_V1(gbt_ts_same);
|
|
|
|
Datum gbt_ts_compress(PG_FUNCTION_ARGS);
|
|
Datum gbt_tstz_compress(PG_FUNCTION_ARGS);
|
|
Datum gbt_ts_union(PG_FUNCTION_ARGS);
|
|
Datum gbt_ts_picksplit(PG_FUNCTION_ARGS);
|
|
Datum gbt_ts_consistent(PG_FUNCTION_ARGS);
|
|
Datum gbt_tstz_consistent(PG_FUNCTION_ARGS);
|
|
Datum gbt_ts_penalty(PG_FUNCTION_ARGS);
|
|
Datum gbt_ts_same(PG_FUNCTION_ARGS);
|
|
|
|
|
|
#define P_TimestampGetDatum(x) PointerGetDatum( &(x) )
|
|
|
|
static bool
|
|
gbt_tsgt(const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(
|
|
DirectFunctionCall2(timestamp_gt, PointerGetDatum(a), PointerGetDatum(b))
|
|
);
|
|
}
|
|
|
|
static bool
|
|
gbt_tsge(const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(
|
|
DirectFunctionCall2(timestamp_ge, PointerGetDatum(a), PointerGetDatum(b))
|
|
);
|
|
}
|
|
|
|
static bool
|
|
gbt_tseq(const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(
|
|
DirectFunctionCall2(timestamp_eq, PointerGetDatum(a), PointerGetDatum(b))
|
|
);
|
|
}
|
|
|
|
static bool
|
|
gbt_tsle(const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(
|
|
DirectFunctionCall2(timestamp_le, PointerGetDatum(a), PointerGetDatum(b))
|
|
);
|
|
}
|
|
|
|
static bool
|
|
gbt_tslt(const void *a, const void *b)
|
|
{
|
|
return DatumGetBool(
|
|
DirectFunctionCall2(timestamp_lt, PointerGetDatum(a), PointerGetDatum(b))
|
|
);
|
|
}
|
|
|
|
|
|
static int
|
|
gbt_tskey_cmp(const void *a, const void *b)
|
|
{
|
|
if (gbt_tsgt((void *) &(((Nsrt *) a)->t[0]), (void *) &(((Nsrt *) b)->t[0])))
|
|
return 1;
|
|
else if (gbt_tslt((void *) &(((Nsrt *) a)->t[0]), (void *) &(((Nsrt *) b)->t[0])))
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const gbtree_ninfo tinfo =
|
|
{
|
|
gbt_t_ts,
|
|
sizeof(Timestamp),
|
|
gbt_tsgt,
|
|
gbt_tsge,
|
|
gbt_tseq,
|
|
gbt_tsle,
|
|
gbt_tslt,
|
|
gbt_tskey_cmp
|
|
};
|
|
|
|
|
|
/**************************************************
|
|
* timestamp ops
|
|
**************************************************/
|
|
|
|
|
|
|
|
static Timestamp *
|
|
tstz_to_ts_gmt(Timestamp *gmt, TimestampTz *ts)
|
|
{
|
|
int val,
|
|
tz;
|
|
|
|
*gmt = *ts;
|
|
DecodeSpecial(0, "gmt", &val);
|
|
|
|
if (*ts < DT_NOEND && *ts > DT_NOBEGIN)
|
|
{
|
|
tz = val * 60;
|
|
|
|
#ifdef HAVE_INT64_TIMESTAMP
|
|
*gmt -= (tz * INT64CONST(1000000));
|
|
#else
|
|
*gmt -= tz;
|
|
#endif
|
|
}
|
|
return gmt;
|
|
}
|
|
|
|
|
|
|
|
|
|
Datum
|
|
gbt_ts_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval = NULL;
|
|
|
|
PG_RETURN_POINTER(gbt_num_compress(retval, entry, &tinfo));
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_tstz_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval;
|
|
|
|
if (entry->leafkey)
|
|
{
|
|
tsKEY *r = (tsKEY *) palloc(sizeof(tsKEY));
|
|
|
|
TimestampTz ts = *(TimestampTz *) DatumGetPointer(entry->key);
|
|
Timestamp gmt;
|
|
|
|
tstz_to_ts_gmt(&gmt, &ts);
|
|
|
|
retval = palloc(sizeof(GISTENTRY));
|
|
r->lower = r->upper = gmt;
|
|
gistentryinit(*retval, PointerGetDatum(r),
|
|
entry->rel, entry->page,
|
|
entry->offset, FALSE);
|
|
}
|
|
else
|
|
retval = entry;
|
|
|
|
PG_RETURN_POINTER(retval);
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_ts_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
Timestamp *query = (Timestamp *) PG_GETARG_POINTER(1);
|
|
tsKEY *kkk = (tsKEY *) DatumGetPointer(entry->key);
|
|
GBT_NUMKEY_R key;
|
|
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
|
|
|
|
key.lower = (GBT_NUMKEY *) & kkk->lower;
|
|
key.upper = (GBT_NUMKEY *) & kkk->upper;
|
|
|
|
PG_RETURN_BOOL(
|
|
gbt_num_consistent(&key, (void *) query, &strategy, GIST_LEAF(entry), &tinfo)
|
|
);
|
|
}
|
|
|
|
Datum
|
|
gbt_tstz_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
TimestampTz *query = (Timestamp *) PG_GETARG_POINTER(1);
|
|
char *kkk = (char *) DatumGetPointer(entry->key);
|
|
GBT_NUMKEY_R key;
|
|
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
|
|
Timestamp qqq;
|
|
|
|
key.lower = (GBT_NUMKEY *) & kkk[0];
|
|
key.upper = (GBT_NUMKEY *) & kkk[MAXALIGN(tinfo.size)];
|
|
tstz_to_ts_gmt(&qqq, query);
|
|
|
|
PG_RETURN_BOOL(
|
|
gbt_num_consistent(&key, (void *) &qqq, &strategy, GIST_LEAF(entry), &tinfo)
|
|
);
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_ts_union(PG_FUNCTION_ARGS)
|
|
{
|
|
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
|
|
void *out = palloc(sizeof(tsKEY));
|
|
|
|
*(int *) PG_GETARG_POINTER(1) = sizeof(tsKEY);
|
|
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
|
|
}
|
|
|
|
|
|
#define penalty_check_max_float(val) do { \
|
|
if ( val > FLT_MAX ) \
|
|
val = FLT_MAX; \
|
|
if ( val < -FLT_MAX ) \
|
|
val = -FLT_MAX; \
|
|
} while(false);
|
|
|
|
|
|
Datum
|
|
gbt_ts_penalty(PG_FUNCTION_ARGS)
|
|
{
|
|
|
|
tsKEY *origentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
|
|
tsKEY *newentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
|
|
float *result = (float *) PG_GETARG_POINTER(2);
|
|
|
|
double orgdbl[2],
|
|
newdbl[2];
|
|
|
|
/*
|
|
* We are allways using "double" timestamps here. Precision should be good
|
|
* enough.
|
|
*/
|
|
orgdbl[0] = ((double) origentry->lower);
|
|
orgdbl[1] = ((double) origentry->upper);
|
|
newdbl[0] = ((double) newentry->lower);
|
|
newdbl[1] = ((double) newentry->upper);
|
|
|
|
penalty_check_max_float(orgdbl[0]);
|
|
penalty_check_max_float(orgdbl[1]);
|
|
penalty_check_max_float(newdbl[0]);
|
|
penalty_check_max_float(newdbl[1]);
|
|
|
|
penalty_num(result, orgdbl[0], orgdbl[1], newdbl[0], newdbl[1]);
|
|
|
|
PG_RETURN_POINTER(result);
|
|
|
|
}
|
|
|
|
|
|
Datum
|
|
gbt_ts_picksplit(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_POINTER(gbt_num_picksplit(
|
|
(GistEntryVector *) PG_GETARG_POINTER(0),
|
|
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
|
|
&tinfo
|
|
));
|
|
}
|
|
|
|
Datum
|
|
gbt_ts_same(PG_FUNCTION_ARGS)
|
|
{
|
|
tsKEY *b1 = (tsKEY *) PG_GETARG_POINTER(0);
|
|
tsKEY *b2 = (tsKEY *) PG_GETARG_POINTER(1);
|
|
bool *result = (bool *) PG_GETARG_POINTER(2);
|
|
|
|
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
|
|
PG_RETURN_POINTER(result);
|
|
}
|